Recent changes to 14: Muti threaded stack overflow error

#14 Muti threaded stack overflow error

Bruce Martin — Sun, 18 Mar 2018 03:06:36 -0000

you need to keep it as bytes and write to a stream

private static byte[] xml2data(InputStream dataFileName, String copybookFileName)
throws FileNotFoundException, RecordException, IOException, JAXBException, XMLStreamException {

        ByteArrayOutputStream os = new ByteArrayOutputStream(0x10000);
        Cobol2GroupXml.newCb2Xml2Xml(copybookFileName)
                      .setFileOrganization(net.sf.JRecord.Common.Constants.IO_FIXED_LENGTH)
                      .setFonmt"cp037")
                      .xml2Cobol(dataFileName, os);
        return os.toByteArray();

write the bytes to a stream and send the file to mainframe as binary
(no ebcdic conversio as it is alreadyin ebcdic)

#14 Muti threaded stack overflow error

Mouttou Coumara Vadivel — Fri, 16 Mar 2018 10:29:18 -0000

Hi,
Thanks for you reply.
Currently, I am using the below method for conversion.

private static String xml2data(InputStream dataFileName, String copybookFileName)
throws FileNotFoundException, RecordException, IOException, JAXBException, XMLStreamException {

            ByteArrayOutputStream os = new ByteArrayOutputStream(0x10000);
            Cobol2GroupXml.newCb2Xml2Xml(copybookFileName)
                          .setFileOrganization(net.sf.JRecord.Common.Constants.BINARY_IO)
                          .xml2Cobol(dataFileName, os);
            return new String(os.toByteArray());

        }

Could you please let me know the constant value set in the setFileOrgnazation method?.

Best Regards
S.Mouttou

#14 Muti threaded stack overflow error

Bruce Martin — Fri, 16 Mar 2018 10:00:20 -0000

Looking at the examples for latest cobol2xml : https://sourceforge.net/projects/coboltoxml/files/

the example: xml2data.bat will convert a Xml file to binary cobol-ebcdic (Fixed length RECFM=FB) which could be used unchanged (i.e. binary transfer) on the mainframe

Basically:

java -jar ../lib/Xml2Cobol.jar ^
          -cobol DTAR020.cbl -font cp037 -fileOrganisation FixedWidth ^
          -input in/DTAR020.xml ^
          -output out/DTAR020_A.bin

#14 Muti threaded stack overflow error

Mouttou Coumara Vadivel — Fri, 16 Mar 2018 07:40:25 -0000

Hi,

Did you check this query?

Best Regards
S.Mouttou

#14 Muti threaded stack overflow error

Mouttou Coumara Vadivel — Wed, 14 Mar 2018 07:15:00 -0000

Hi Martin,

xml to copy book conversion using jrecord.

We have a requirement to send a value in computational format at backend. I saw there is a feature called computational shown below

With the above configuration, When i am sending the value as 80 for the above field(CEX1000C-XML-BLK-SIZE), We could see that 'P' at the location 2543 after converted into copy book using the below api of Jrecord

String resultAck= xml2data(stream,"DefCpyDef.xml");

When we check with the backend(mainframe), it looks like they got 215.

When we further analyze, it is found we are suppose to send & character at the specified location(2543) to get the actual value of 80 at backend(mainframe).

Based on the above, we derived the following algorithm,

Decimal to hexa decimal
Hexa decimal to Ebcdic
Ascii to hex
hex to Decimal

In the step 3, we need to consider the ebcdic derived at step2 as ascii

For example:

To send 500 at backend, we are suppose to send 308 at our side for the comp field,

To derive 308.

500 convert to hex "01F4"
F4 equivalent EBCDIC "4"; 01 equivalent EBCDIC "SOH"
AsCII 4's equivalent hex "34"; AsCII SOH's equivalent hex "01"
Hex 134 to decimal 308.

Currently, we are doing the above steps in the coding to achieve this requirement. Though it is working fine, we don't want any custom coding to achieve this. So far, we have not done any customized coding for conversion of xml to copy book.

To achieve the above, Do you have already any special feature in jrecrod, please let me know.
Otherwise, could you please add a new utility to achieve this in jrecrod itself.

Note: We have been using jrecrod for around 2 and half years, millions of messages going through. We have not faced any issues so far.

Best Regards
S.Mouttou

#14 Muti threaded stack overflow error

Bruce Martin — Wed, 07 Dec 2016 03:58:34 -0000

I have finnished the changes; see:

https://sourceforge.net/projects/coboltoxml/files/CobolToXml/Version_0.81.4/CobolToXml_0.81.4.7z/download

To use:

java -jar ../lib/Cobol2Xml.jar -cobol DTAR020.cbl -font cp037    -fileOrganisation FixedWidth ^
                         -formatText usePlus ^
                         -input in/DTAR020.bin   ^
                         -output out/DTAR020_usePlusForNumeric.xml

the -formatText usePlus is the important bit

#14 Muti threaded stack overflow error

Bruce Martin — Sat, 03 Dec 2016 03:50:16 -0000

It will not take a lot of work but I will not have much time to work on it over the next week.

So possibly 9/10 days

#14 Muti threaded stack overflow error

Mouttou Coumara Vadivel — Sat, 03 Dec 2016 02:52:46 -0000

Hi,

Tks for your suggestion. I will go thorough the sample attached herewith and let you know. May I know when i can get the the updated code of implementing the below
•Numeric fields first digit should be +(symbol) - not possible at the moment: but I can probably make the changes

Best Regards
S.Mouttou

#14 Muti threaded stack overflow error

Bruce Martin — Fri, 02 Dec 2016 23:59:18 -0000

I have had some thoughts on converting Cobol-Copybooks <--> JSON copybook:
In the examples that come with the cb2xml package there is code to convert the Xml into java objects using jaxb (see: example of loading and printing cb2xml using JAXB and Java Cobol Item definitions)
I also wrote a print program it converts a Cobol-Copybook into the JAXB format and then writes back out as Cobol.

Format of the JAXB Items

Copybook
* List of Item's

Item
List of condition's
List of Item's

It should be possible to read/write the Cobol item JAXB objects as JSON. So code for a Cobol Copybook <--> JSON Copybook is there it just a matter of putting it all together. Let me know if that is what you need.

I will attach the pretty print example

#14 Muti threaded stack overflow error

Bruce Martin — Thu, 01 Dec 2016 00:14:27 -0000

Numeric fields first digit should be +(symbol) - not possible at the moment: but I can probably make the changes
Do you want to convert the actual Cobol-Copybook to Json (and vice versa ???) - I do not have a project to do this.
- I suggest looking at the Jaxb version of the Output from cb2xml. While you could look at Jaxb-Json conversion (e.g. moxy It would probably be better to simplify the JSON (for JSON -->> Cobol) step.
- Alternatively you could do your own CopyBookAnalyzer class, bu I think working with the JAXB would be easier/safer.
If you want Cobol-Data --> Json I have written a CobolToJson converter. See JRecord Downloads There is no Json to Cobol though